The CO2 registration requirement essentially involves recording the mileage of business trips and possibly also commuting. Your employees can use the Gaiyo App to track their journeys, which we then convert into the correct data for the registration requirement. If they travel with the Gaiyo Card or one of the many affiliated mobility services, we also convert these into travel transactions for the registration requirement. Once a year, you will automatically receive a CO2 report from us, which you can use directly for your annual declaration via RVO.